engleski

Useful transformations between photometric systems

In the course of detailed studies of the long-term variations of particular Be stars, we have practically verified that the non-linear transformations, needed for a reliable transformation between a standard and an instrumental photometric system can also be successfully used to the transformations between two particular standard photometric systems. To demonstrate the importance and power of non-linear transformations and to provide pieces of information useful for a broader astronomical community, we summarize the transformation formul&aelig ; already published (but hidden from the general community in papers dealing with particular Be stars) and present several other useful transformations derived by us. All transformation formul&aelig ; presented here are transformations from various photometric systems to Johnson's UBV system. However, the general procedures applied here would allow construction of similar transformations between other photometric systems, too.

methods: observational - techniques: photometric

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